The stock is off more than 2% on heavier-than-usual trading volume, continuing the slide that began after the technology giant released disappointing iPhone 5 sales figures.

At least one chart watcher is now saying investors should expect the stock’s downdraft to continue a bit longer before the shares bounce back.

“This breakdown is certainly not constructive in the short run,” Mark Newton, chief technical analyst at Greywolf Equity Partners, said in an email. “While the near-term pattern has gotten worse, the longer-term trend is still very much intact.”